Who would like the choice of getting Digital Dissolve with either the English Penny as the gimmick, or the Half Dollar as the gimmick? It would be much, much more useful if the gimmick was made as a Half Dollar (3 Fly).
Afraid that wouldn't work. An old english penny (1 pence sterling) has a diameter of 31mm where as an american half dollar is 30.61mm in diameter. .39mm may not seem like a huge difference, but if you own Digital Dissolve you can see what the significance of one coin being larger than the other is.